Ammonium Fluorosilicate from Mexico
Ammonium fluorosilicate ((NH4)2SiF6) serves as a rodenticide, water fluoridation agent, and in ceramic production. It is a complex fluorine salt classified in HTS 2826.19.1000 under 'other' fluorides of ammonium. Meets subheading note for chemically defined compounds.
Duty Rate — Mexico → United States
13.1%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide EPA registration if for pesticide use; fluorosilicates often require FIFRA compliance documentation
• Ensure crystalline form documentation; amorphous powders risk heading 3824 as preparations
• Check for complex salt status under note to 2842; simple salts stay in 2826